Liquid filling machine

The utility model provides a liquid filling machine. The liquid filling machine comprises a liquid storage tank and a plurality of filling valves which are arranged in the circumferential direction of the liquid storage tank and used for filling liquid. The liquid storage tank is connected with a rotary connecting mechanism used for achieving coaxial rotary connection of electricity, gas and liquid, the rotary connecting mechanism is connected with a pneumatic electromagnetic valve, and the pneumatic electromagnetic valve is connected with an air cylinder of the filling valve. The filling valve comprises a measuring cup, a measuring cup upper end cover is arranged at the top of the measuring cup, the measuring cup upper end cover is connected with a liquid inlet pipe, and one end of the liquid inlet pipe is connected with the liquid storage tank; the upper end cover of the measuring cup is also provided with a liquid inlet hole which is communicated with a liquid inlet pipe; a measuring cup bottom cover is ar